873456009 has 4 divisors (see below), whose sum is σ = 1164608016. Its totient is φ = 582304004.

The previous prime is 873455951. The next prime is 873456013. The reversal of 873456009 is 900654378.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 873456009 - 2¹¹ = 873453961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (873456079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145575999 + ... + 145576004.

It is an arithmetic number, because the mean of its divisors is an integer number (291152004).

Almost surely, 2^873456009 is an apocalyptic number.

It is an amenable number.

873456009 is a deficient number, since it is larger than the sum of its proper divisors (291152007).

873456009 is a wasteful number, since it uses less digits than its factorization.

873456009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291152006.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 873456009 is about 29554.2891810986. The cubic root of 873456009 is about 955.9026794864.

The spelling of 873456009 in words is "eight hundred seventy-three million, four hundred fifty-six thousand, nine".